fix: 修复语音识别标点处理及MCP连接稳定性问题

修复语音识别在非push_to_talk模式下未移除首标点的问题，提升听写体验
优化MCP客户端连接管理，增加心跳检测和连接状态主动检查，避免假死连接
移除调试日志语句，避免生产环境日志污染

lib/modules/translation/controllers/translation_controller.dart

@@ -445,7 +445,7 @@ class TranslationController extends GetxController with WidgetsBindingObserver {
       }
       await _asrService.startContinuousRecognition(
         _audioSourceType,
-        isRemoveFirstPunctuation: false,
+        isRemoveFirstPunctuation: true,
         mode: 'push_to_talk',
       ); //开启识别
       _startAsrActiveTracking(); //开启识别活动跟踪
@@ -1066,11 +1066,19 @@ class TranslationController extends GetxController with WidgetsBindingObserver {
 
   /// 启动语音识别
   Future<void> _startAsrService(String mode) async {
-    await _asrService.startContinuousRecognition(
-      _audioSourceType,
-      isRemoveFirstPunctuation: false,
-      mode: mode,
-    );
+    if (mode == 'push_to_talk') {
+      await _asrService.startContinuousRecognition(
+        _audioSourceType,
+        isRemoveFirstPunctuation: false,
+        mode: mode,
+      );
+    } else {
+      await _asrService.startContinuousRecognition(
+        _audioSourceType,
+        isRemoveFirstPunctuation: true,
+        mode: mode,
+      );
+    }
   }
 
   /// 完成识别启动

local_plugins/azure_speech/ios/azure_speech/Sources/azure_speech/AzureTtsHelper.swift

@@ -1455,7 +1455,7 @@ private func ensureAudioSessionQueueSpecificKeySet() {
  */
 private func applyAudioSessionForTTS() -> Bool {
     var success = true
-    os_log("liwei-------------TTS applyAudioSessionForTTS currentRecognitionMode:%{public}@", log: self.log, type: .info, currentRecognitionMode)
+    // os_log("liwei-------------TTS applyAudioSessionForTTS currentRecognitionMode:%{public}@", log: self.log, type: .info, currentRecognitionMode)
     ensureAudioSessionQueueSpecificKeySet()
     let applyBody = {
         if self.isApplyingAudioSessionConfig { return }

local_plugins/chat_api/ios/chat_api/Sources/chat_api/MCPClient.swift

@@ -36,9 +36,11 @@ public class MCPSubClient {
 
     // 使用官方MCP Swift SDK
     private var mcpClient: Client?
+    private var transport: CustomSseClientTransport?
     private var tools: [Tool] = []
     private var toolMaps: [[String: Any]] = []
     private var isConnectedFlag = false
+    private let toolsLock = NSLock()
     
     // 重连配置
     private let maxRetryAttempts = 3
@@ -51,6 +53,10 @@ public class MCPSubClient {
     // 工具调用配置 - 添加这两行
     private let maxToolCallRetries = 3
     private let toolCallTimeout: TimeInterval = 30.0
+
+    private let keepAliveInterval: TimeInterval = 25.0
+    private let keepAliveTimeout: TimeInterval = 8.0
+    private var keepAliveTask: Task<Void, Never>?
     
     // 连接状态锁
     private let connectionLock = NSLock()
@@ -89,6 +95,7 @@ public class MCPSubClient {
                     }
                 }
             )
+            self.transport = transport
             
             // 3. 连接到服务器（添加超时）
             try await withTimeout(seconds: 10) {
@@ -106,6 +113,7 @@ public class MCPSubClient {
             isConnectedFlag = true
             retryCount = 0 // 重置重试计数
             currentReconnectDelay = initialReconnectDelay // 重置延迟
+            startKeepAlive()
             
             return true
             
@@ -116,6 +124,9 @@ public class MCPSubClient {
     }
     
     private func processTools(_ toolList: [Tool]) {
+        toolsLock.lock()
+        defer { toolsLock.unlock() }
+
         tools.removeAll()
         toolMaps.removeAll()
         
@@ -173,6 +184,13 @@ public class MCPSubClient {
     /// 检查连接状态
     /// 检查连接状态
     public func checkConnection() async -> Bool {
+        if isConnectedFlag, let transport {
+            let isActive = await transport.isConnectionActive()
+            if !isActive {
+                isConnectedFlag = false
+            }
+        }
+
         if !isConnectedFlag {
             return await connect()
         }
@@ -339,14 +357,25 @@ public class MCPSubClient {
     }
     
     public func getToolMaps() -> [[String: Any]] {
+        toolsLock.lock()
+        defer { toolsLock.unlock() }
+
         return toolMaps
     }
     
     public func containsTool(name: String) -> Bool {
+        toolsLock.lock()
+        defer { toolsLock.unlock() }
+
         return tools.contains { $0.name == name }
     }
     
     public func close() async {
+        keepAliveTask?.cancel()
+        keepAliveTask = nil
+        reconnectTask?.cancel()
+        reconnectTask = nil
+
         if let client = mcpClient {
             await client.disconnect()
         }
@@ -359,9 +388,9 @@ public class MCPSubClient {
             if isConnectedFlag {
                 print("[\(serverId)] 连接已断开，更新状态")
                 isConnectedFlag = false
-                
-                // 启动重连逻辑
-                // startReconnection()
+                keepAliveTask?.cancel()
+                keepAliveTask = nil
+                startReconnection()
             }
         }
     }
@@ -369,7 +398,9 @@ public class MCPSubClient {
     /// 启动重连
     private func startReconnection() {
         // 取消之前的重连任务
-        reconnectTask?.cancel()
+        if reconnectTask != nil {
+            return
+        }
         
         reconnectTask = Task { [weak self] in
             await self?.performReconnection()
@@ -378,6 +409,8 @@ public class MCPSubClient {
     
     /// 执行重连
     private func performReconnection() async {
+        defer { reconnectTask = nil }
+
         while retryCount < maxRetryAttempts && !Task.isCancelled {
             retryCount += 1
             
@@ -403,6 +436,8 @@ public class MCPSubClient {
     private func handleConnectionError(_ error: Error) async {
         print("[\(serverId)] 连接错误: \(error.localizedDescription)")
         isConnectedFlag = false
+        keepAliveTask?.cancel()
+        keepAliveTask = nil
         
         // 如果是MCP特定错误，可以进行特殊处理
         if let mcpError = error as? MCPError {
@@ -411,9 +446,49 @@ public class MCPSubClient {
         }
         
         // 如果还有重试机会，启动重连
-        // if retryCount < maxRetryAttempts {
-        //     startReconnection()
-        // }
+        startReconnection()
+    }
+
+    private func startKeepAlive() {
+        keepAliveTask?.cancel()
+
+        keepAliveTask = Task { [weak self] in
+            guard let self else { return }
+
+            while !Task.isCancelled {
+                try? await Task.sleep(for: .seconds(self.keepAliveInterval))
+
+                if Task.isCancelled {
+                    return
+                }
+
+                if !self.isConnectedFlag {
+                    continue
+                }
+
+                if let transport = self.transport {
+                    let isActive = await transport.isConnectionActive()
+                    if !isActive {
+                        await self.handleConnectionLost()
+                        continue
+                    }
+                }
+
+                guard let client = self.mcpClient else {
+                    await self.handleConnectionError(MCPError.internalError("MCP client not initialized"))
+                    continue
+                }
+
+                do {
+                    let (toolList, _) = try await withTimeout(seconds: self.keepAliveTimeout) {
+                        try await client.listTools()
+                    }
+                    self.processTools(toolList)
+                } catch {
+                    await self.handleConnectionError(error)
+                }
+            }
+        }
     }
     
     /// 获取连接状态
@@ -665,7 +740,7 @@ public class MCPClient {
     }
     
     public func isConnected() -> Bool {
-        return !subClients.isEmpty && subClients.values.allSatisfy { $0.getConnectionStatus() }
+        return !subClients.isEmpty && subClients.values.contains { $0.getConnectionStatus() }
     }
     
     public func disconnectAll() async {